William meyeick



(No Model.)

W. MEYRIGK.

S HAFT GOUPLINGI' m m w AW M m 7m Qw on the inclosed head.

.head, having an angular-shaped boss on itsr end to enter a corresponding cavity formed in UNITED STATES PATENT QFFICE.

WILLIAM MEYRIOK, OF DES'MOINES, IOWA, ASSIGNOR OF ONE-HALF TO J. M. MONTGOMERY, OF SAME PLACE.

SHAFT-COUPLING.

SPECIFICATION forming part of Letters Patent No. 247,265, dated September 20, 1881.

Application filed July 5, 1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM Mention, of Des Moines, in the county of Polk and State of Iowa, have invented an Improved Shaft- Coupling, of which the following is a specification.

The object of my invention is to provide a shaft-coupling specially adapted to connect two plain shaft-sections that are uniform in shape and size at their ends in such a manner as to allow fiexure between them and longitudinal adjustment of the sections relative to each other as required to lengthen and shorten the complete shaft.

Heretofore a ball-shaped head, having three ribs on its outer surface, and an angular bore adapted to receive the end of a shaft-section, has had a shell of corresponding form cast around it, and ribs formed integral with the inner surface of the shell to engage the ribs A flat-sided elongated the end of a second shaft-section, has been in; serted in a spherical shell having a tubular neck adapted to receive the end of a second shaft-section. In the first instance, the inclosed head has no neck to extend outside of the shell to receive the shaft-section and prevent it from coming in contact with the mouth of the shell and binding at certain angles of flexure; and in the second instance the neck of the head is contracted at the mouth of the shell, and has no bore to receive and facilitate the longitudinal adjustment of a shaft-section. I overcome these defects by forming necks having uniform angular bores on a spherical head, and also ona spherical shell cast around the head, as hereinafter fully set forth,in such a manner that the two distinct castings are inseparably connected and the complete device adapted to receive at each of its ends pieces of plain shafting that can be readily adjusted longitudinally relative to each other and the coupling, and also rotated at Various angles relative to each other by means of my flexible coupling.

Figure 1 of my drawings is a perspective view of my complete coupling, showing sections of shaftin g extending at different angles from opposite ends of the device. Fig. 2 is aperspective view of the minor part of the com-- plete device. Fig. 3 is a longitudinal half-section of the major part, and Fig. 4 a transverse section through the largest diameter of the same piece. Fig. 5 is a longitudinal section of the complete coupling. Fig. 6is a top view of a core-box, and illustrates my manner of combining the two distinct parts. Jointly considered these views clearly show the construction, operation, and utility of my complete invention.

A is the major part of my device, in the form of a tubular casting that has an angular cavity in its small and b, adapted to receive the end of a corresponding shaft-section, and an enlarged socket at its opposite and large end 0, adapted to inclose and retain the enlarged end the minor part D of the complete device; The minor part Dis also a tubular casting, and has an angular cavity adapted to redeive the end of a shaft-section of correspondingshapc. f f are enlargements or lugs formed integral with the frontand rounded end, and on opposite sides thereof, to en gage corresponding lugs, 99, formed on the inside of the spherical, hollow,-and large end 0 ofthe major partA.

To construct and combine the two parts, I first cast the minor part D and then place it in a core-box, as shown in Fig. 6, and form a sand-core around the front portion and that part that is designed to be inclosed in the spherical cavity of the spherical end 0 of the major part A. g are detachable patterns of the lugs 9, connected with the inner side of the core-box by means of dovetail projections or in any suitable way, to serve as a means of producing corresponding cavities in the sides of the sand-core formed around the end of the casting D. I then place the combined sandcore and minor metal casting D in a suitable molding-box, and with suitable patterns mold means of the lugs f and 9', that engage each surface and an angular bore in its neck, and

other, but do not prevent flexure in the com- I plete device.

To couple sections of shaftingin such a, manner as to allow flexion in the complete shaft, I simply insert the ends into the opposite ends of the complete flexible coupling, as shown in Fig. 1.

the inclosed head D, having enlargements f f, and a, neck with an angular bore extending outside of the spherical shell, substantially as 15 shown and described, to operate in the manner set forth, for the purposes specified.

WILLIAM MEYRIOK.

Iclaim as my invention Vitnesses: The improved shaft-coupling consisting of a FRED HAMPTON, spherical shell having lugs g g on its inner R. G. ORWIG. 

